Rudder-operating gear



Patented Mm. 15,1921.

J. A. KITCHEN.

RUDDER OPERATING GEAR.

APPLICATION FILED Aue.9,192o.

b .Emu c J. G. A. KITCHEN.

HUDDER OPERATING GEAR.

APPLICATION FILED AUG.9 19,20.

2 SHEETS-SHEET 2.

Patented Mar. 15, 1921.

Fig 7 ITL/v @1L-E01:

di'zolnfy NDHMS PETERS. INC.. DYMO.. WASHINGTON. D. C

ed certain narran stares PATENT OFFICE.

essreNoR or' ONE-HALE ro eoRnoN LAND, AND JAMES nYLER oiaANLeN,

LAND.

Specification of Letters Patent.

HENRY FRASER. or LIVERPOOL, ENG- or wEsrWoLD, BLUNDELLSANDS, Elve-ARUnDER-OPERATNG GEAR.

Patented Mar. 15, 1921.

Application filed August 9, 1920. Serial No. 402,205.

Be it known that I, JOHN GEORGE AULsE- encon KITCHEN, a subject of theKing of Great Britain and ireland, andresident of E' Fiese Bank,Scotforth, Lancaster, in the vounty of Lancaster, England, have inventnew and useful improvements i?.elating to Ruckler-Operating Gears, 'ofwhich 'the following is a speciication. v

This invent-ion relates to the operating gear for rudders of the typewhich are ar-V ranged in pairs at the Yopposite sides ofthe Y screwpropeller or propellers and adapted for. both boat steering andreversing purposes as set forth in prior U.. S. Patent No. 1186210. n y

`The object of the present invention is to provide an improvedcompactarrangement of the'gear which shall insure that the rudders aremaintained in their closed or boat reversing position while the Vboat isbeing steered when going astern.

Referring kto the two accompanying sheets of explanatory drawings Figurel is a sectional side elevation, Fig. 2 a plan, and Fig. 3 a sectionalend elevation representing one lform of rudder operating gearconstructed in accordance with this invention. Y V

Fig. 4 is a sectional yside elevation, Fig. 5 a plan and Fig. 6 an endview of another form of the said gear.

Fig. 7 is a diagrammatic plan view showing the rudders in the closed orboat reversing position.

The same reference letters in the different views indicate the same orsimilar parts.

ln accordance with my present invention the tilier or tiller arm or bara fulcrums about the axis of the concentric rudder stocks; preferably itis fulcrumed freely upon the end of the inner stock 7) of the twoconcentric rudder stocks and c. The said arm or bar a has sliding collar(Z thereon which is connected by links e to arms or levers f upon therudder stocks. The said collar can move freely along the rtiller a. Thearms orlevers ,t aforesaid are also connected by means of rods g, to across-head or like part L fulcrumed about a pin z', which in the exampleillustrated at Figs. 1, 2 and 3. can be moved away from or toward theaxis of the rudder stocks by a screw j andsliding nut device lo, thescrew, on its rotation by a sprocket or chain wheel as Z, effecting thesaid movements of such nut or slideic with whichy thel fulcrum or pin iis formed. The said cross head /t is so shaped that whenthe arms orlevers f' upon the rudder stocks are in the rudder closed or boatreversing position, the said varms or levers are parallel with the partsof the cross head /L on the respective sides of the cross head fulcrum.Such closed position of the rudders'm is shown in the diagrammatic viewat Fig. 7 the said view shows'also the arms the cross head /i and theaforesaid connecting rods g. It follows therefore that when the ruddersare closed, any movement given to the arms or levers fand so to thecross head, by the turningv ofthe rudder stocks forboat 'steeringpurposes, will not cause any relative movement of the rudders inopposite angular directions such as would occur if the said cross headand arms or levers vwere not parallel, as before described, when therudders were closed together for reversing.

In some cases, of which an example is given at Figs. t, 5 and 6, we mayoperate lhe cross head fulcrum t' by means of a reciprocating part 7cactuated by a crank kpin n, the position of the said pin when therudders are closed for boat reversing purposes being approximately in,or at only a slight angle to, line passing through the n anis of thecrank 0 and the axis of the ful` crum pin z'. By this means we areenabled to effect the final closing movement of the rudders with veryconsiderable leverage or mechanical advantage due to the toggle actionof the connecting rod or link v72 between the crank pin n and thefulcrum pin -i of the cross head It. As shown at Figs. 4 and 5,the armsor levers f of the rudder stocks are in the positions corresponding tothe fully open or approximately fullyl open position of the rudders. Itwill be understood that if the crank pin n has moved through .asemi-circle from the position shown at Fig. 4, it will have brought thesaid arms f to the rudder closed or boat reversing position Shown atFig. 7, and that the connecting rod p will then be at the same Obliquityor angularity as that shown at Fig. 4, so that f of the rudder stocks,

Vtiller about the vse:

desired toggle action for the purpose aforesaid..-

visV rotated :through the wheel as Z The crankA 0. medium of a' chain orsprocket or otherwise.

Thetiller bar a may .be actuated directly by hand or through suitabletransmission means. Y

Having now described my invention what Iclaimas new and desire to secureby LettersPatent is :f- Y Y 1. In operating gear for rudders adaptedboth for boat steering and reversing purposes, vthe combinationVcomprising two rudL derswith rudders stocks,`arms upon therudder'stocksm, pivotally mounted cross head and rods connecting samewith said arms, a tiller, and means whereby the rudders are maintainedin their closed or boat reversing position while the vessel is beingsteered when going astern, as set forth.

' 2. In rudder operating gear having means whereby the rudders aremaintained in their closed or boat reversing position, while the vesselvis being steered when going estern, theicombination with the tillerandthe rudder stock-arms or levers, of a collar carriedv by and free toslide'onsaid tillerf and linksconnecting therudder stock arms andsaidrcollar, asset forth.v c .3. In rudder operating gear, having meanswhereby the rudders are maintained in their closed or boat reversingposition, while'the vesselris being steered when going astern, thecombination with a tiller, a pivotally lmounted vcross head; and rudderstock arms or levers, of a collar carried by 'means whereby the ruddersare Ymaintained ,in their closed or boat reversing position,V while thevesselis'being steered when going astern, the combination with a tiller,a pivotally mounted cross head, .and rudder stockarms or levers, of acollar carried by and free to slide on said tiller, means connecting therudder stock arms or levers with the saidcross head andv with VtheV saidcoilar, means for reciprocating.V the cross head and 'for imposing atoggle action thereon 'as seti'orth.` Y v V5. Inoperating gear "forrudders adapted `both for Y purposes the combination with a tiller, apivotally 'mounted cross head land rudder stock arms orlevers, of acollar carried by and free to slide onv saidtillerj means connecting therudder stock 'arms with vthe said collar, and means whereby the *saidcross head is kept in parallel with the said rudder stock arms while thelatter' are moved by the tiller for 'steering when the vessel is goingasterinas set. `forth.

In testimony whereof I have signed i y name to this specification.

JOHN GEORGE AULSBROOK KITCHEN.'

boat steering and reversing.

